Really strugglsed to get pictures as Percy now wriggles so much.
First pic is tied on, but not tucked in. I bring the booster and liner up, wraps the sides around, then bring up the front, allowing enough rise for it to reach about an inch above where it needs to sit. I then tie in a bow.
I tucks the legs right in, i fold so any extra material is already tucked around booster, so it should only be 2 layers
Largest, or toddler
This is about right for Percy now, at 6m (small, but quite chunky)